Resveratrol 1.     Function and Application Resveratrol as health care composition of the red wine is getting more and more recognized by peoples. Modern medicine indicates that Resveratrol has a market followings pharmacological action:anti-bacteria,anti-lipid ox idation.heart diseases prevention,anti-cancer,anti-platelet aggregation,smooth blood vessels,decrease blood lipid. Due to its strong bioactivity, Resveratrol has been widely used to drugs,health care food and cosmetics. 2.Quality and Specifications Raw material: Polygonum cuspidatum(Giant knotweed):20%,50%,90%, 98%. 3.Product characteristics a.        Possess diverse specifications,also could R&D the special one regarding to the customer’s own requirement. b.        The extract solvent is only with water and ethanol; which ensure the safety of the product; c.        Low ash,impurity,.Heavy metal,solvent residue. d.        Complete product tracing system and technical support.. Stable technology withstrict quality control.